/**
*  Copyright (c) 2011, Alex Theodoridis
*  All rights reserved.

*  Redistribution and use in source and binary forms, with
*  or without modification, are permitted provided that the
*  following conditions are met:
*  Redistributions of source code must retain the above
*  copyright notice, this list of conditions and the following disclaimer.
*  Redistributions in binary form must reproduce the above
*  copyright notice, this list of conditions and the following
*  disclaimer in the documentation and/or other materials
*  provided with the distribution.

*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
*  AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
*  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
*  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
*  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
*  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
*  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
*  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
*  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
*  ANY WAY OUT OF THE USE OF THIS SOFTWARE,
*  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*/

#ifndef SINGLETON_H
#define SINGLETON_H

namespace utils {
  
/**
* Represent the singleton template.
* Example of usage:
*  utils::Singleton< ClassName >::getInstance();
*/
template< class T >
class Singleton : public T {
private:
    /**
     * Constructor.
     */
    Singleton() {
    }

    /**
     * Destructor.
     */
    ~Singleton() {
    }

public:
    /**
     * Will return a new instance of
     * the current class.
     */
    static T& getInstance() {
        static Singleton<T> single;
        return single;
    }
};

}


#endif // SINGLETON_H
